Dual-range Type 2 digital sound level meter with backlit LCD This type 2 sound level meter meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems and enforcing noise ordinances. Measures from 35 to 130dB in 2-ranges with accuracy of plus or minus 1.5dB. Data hold and Max hold functions. Backlit display allows use in dimly lit areas. Complete with microphone wind screen and 9V battery. Features High accuracy meets ANSI and IEC 651 Type 2 standards High and Low measuring ranges: 35 to 100dB (low) and 65 to 130dB (high) Data Hold and Max Hold functions Backlit LCD display to view in dimly lit area Type 2 Sound MeterSound Level Meter meets ANSI and IEC 651 Type 2 standards. Ideal for noise surveys in the workplace, installing fire alarms and speaker systems, and enforcing noise ordinances.Additional FeaturesMeasures from 35 to 130 dB in two ranges and has an accuracy of ±1.5 dB.Data Hold and Max Hold functions. Backlit display allows use in dimly lit areas.What is a Sound Level Meter?Sound level meters are instruments designed to respond to noise much like the human ear. The measurements taken by sound level meters are compared to known standards to determine if the noise level could have a detrimental effect on human hearing.Types of Sound Level Meters Type 3 — Low cost models for basic sound checks. Type 2 — Models that meet OSHA and other ordinance testing requirements. Type 1 — Precision for lab testing (Extech doesn't have one). Dosimeters — Measure work noise exposure according to OSHA. Analyzer — analyzes noise in narrow bands. Click here for product datasheet Specifications Range Sound Range (dB) Low: 35 to 100dB, High: 65 to 130dB Basic Accuracy ±1.5dB (Type 2) Weighting (A&C) Yes Response Time (Fast/Slow) Yes Condenser Microphone 0.5" (12.7mm) Analog Output - Dimensions 8.2x2.1x1.25" (210x55x32mm) Weight 8.1oz (230g)